BerlinRosen, which was ranked No. 1 last year, slips to No. 2, while Alison Brod Marketing & Communications catapults from No. 36 to the third spot.
The Observer cited Finn Partners, which was No. 3 last year, for its "stratospheric growth" in the financial services, health and digital sectors combined with acquisitions in Hong Kong, London, Shanghai, Boston and New York.
It applauded the firm's work for British Airways, Netflix, Turkey, Blue Cross Blue Shield of Michigan, TiVo, GSK and St. Jude's Children's Hospital and Museum of Natural History.
The "unstoppable" BerlinRosen grew in headcount (142 to 182), NYC office space and service offerings during 2019.
Jonathan Rosen's and Valerie Berlin's firm "ruled in politics, real estate, arts and tech," according to the Observer.
It counted BerlinRosen's work for Supermajority, gender equality organization; Virgin Hyperloop; Virginia Tech; Bloomberg Media; Public Theater; and Brooklyn Public Library as the firm's highlights.
Alison Brod was the driving force behind the launch of Popeye's chicken sandwich, which generated more than 10B impressions on social media.
The firm also handled Kraft’s “Kraft Now, Pay Later,” Philadelphia Cream Cheese’s “Bagelgate” and Burger King’s “Whopper Detour," which earned four Cannes Lions.
The firm picked up the Bed Bath & Beyond, Hush Puppies and Volvic water accounts, expanded ties with Walmart and launched a cannabis division.